EP1946064B1 - Programmable electronic pressure switch with display - Google Patents
Programmable electronic pressure switch with display Download PDFInfo
- Publication number
- EP1946064B1 EP1946064B1 EP06807718A EP06807718A EP1946064B1 EP 1946064 B1 EP1946064 B1 EP 1946064B1 EP 06807718 A EP06807718 A EP 06807718A EP 06807718 A EP06807718 A EP 06807718A EP 1946064 B1 EP1946064 B1 EP 1946064B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- pressure switch
- value
- switch according
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000006870 function Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/28—Compensation for variation of ambient pressure or temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/30—Means for transmitting pressure to pressure-responsive operating part, e.g. by capsule and capillary tube
Definitions
- the present invention concerns a programmable electronic pressure switch with display.
- pressure switches comprising an external body with an internal cavity in which a circuit board is accommodated which is connected to a pressure sensor and to a power supply via a connector.
- Said pressure switches also comprise buttons for setting some parameters which are preferably arranged within the cavity for better projection.
- Italian patent application MI2004A002329 filed on December 3rd, 2004, shows a pressure switch with two internal setting buttons which allow to set the intervention value and the reset value, present at digital outputs, according to the pressure status of the system to which said pressure switch is connected.
- pressure switches which comprise for a display with setting buttons which allow navigating in configuration menus managed by a software integrated in the circuit board comprised in the pressure switch.
- said pressure switches may have analogue outputs thus defined: a low output (e.g. 4 mA) equivalent to no pressure, and a high output (e.g. 20 mA) equivalent to the maximum pressure with standable by the system (full-scale of the pressure gauge).
- An intermediate output proportional to the detected pressure is available for intermediate values.
- Said analogue output signals may be used for measurement instruments, valve control and so on.
- US 2004/187585 discloses an electronic digital pressure switch for detecting gas pressures features improved safety.
- the digital pressure switch that detects gas pressures and generates outputs has a housing provided with pinholes that allow a gas to pass therethrough. With this arrangement, even if a gas should leak into the housing, the leakage gas is let out through the pinholes. Thus, when the pressure of a flammable gas is detected, it is possible to eliminate the danger of an explosion caused by the flammable gas accumulating in the housing.
- US 5982047 discloses a pressure switching device of the type used in motor vehicles and includes a pressure sensor 21 arranged in a housing 3, which generates an electrical signal U according to the pressure p of a pressure medium or monitored fluid transmitted through a supply opening 15 of housing 3.
- the pressure switching devices includes an interpretation and switching unit 55 adapted to received the electrical sensor signal U and is further adapted to compare the sensor signal with at least one switching threshold value to trigger a switching function or a sequence of switching functions upon the electrical sensor signal exceeding and/or falling short of the switching threshold value.
- US 6429548 discloses a pressure switch with a pressure connection (11), with an electrical pressure sensor (19) to generate a pressure-dependent electrical signal, with an operator-device and/or an adjusting device (16-18) to input at least one pressure switch threshold and with at least one electrical switch output (16-18).
- the pressure switch can be adjusted by operation of the operator device (16-18) in such a manner that the electrical signal corresponding to the instantaneously applied pressure (p) is saved as the first saved pressure value (S1) and the electrical signal corresponding to a pressure (p) applied temporally thereafter, is saved as a second saved pressure value (S2), where these two saved pressure values (S1, S2) define the pressure switching threshold(s) in the operating mode.
- the pressure switch according to the present invention may interface with any machine without the interposition of signal transformation devices.
- the electronic pressure switch shown in figures 1 and 2 comprises an external aluminium body 1 with a cavity 60 having two pairs of longitudinal grooves 61 removably engageable with the ends of flat extractable circuit boards 2-3, electrically connected to each other.
- Said cavity 60 is upperly closed by a lid (62) which supports a connector 6 with external threading 63, crossed by electrical wires 65 for the external electrical connection of circuit boards 2-3.
- External board 1 supports a LED display 100 and setting buttons 12-14, said display and said buttons being protected by a membrane 101.
- a steel flange 90 is fixed which is provided with a cavity 91 in which a ceramic pad pressure sensor 8 with respective seal 9 is fixed by means of a ring nut 80 and a spacer 81, underneath which cavity a threaded attachment 92 for connecting to the pressurised circuit to be monitored, with an internal input channel 95 for the monitored fluid, is found.
- Said flange 90 is releasable from body 1, and in general is made of more resistant material with respect to body 1 in order to work at very high working pressures. It may also be replaced by another flange of different material variable according to the required working pressure.
- said boards 2-3 comprise as a whole a circuit of the type shown in figure 4 having switches 120-122 respectively controlled by setting buttons 12-14, a microprocessor 33 with internal E2PROM, switching transistors 25, power transistors 35, various resistors 22, capacitors 49, an amplifier 50, ground connections, analogue outputs 39-40 controlled by a further regulation board 99, and digital outputs 37-38 with indicator LEDs 11 and 16.
- the circuit further comprises a Wheatstone bridge 72 to which the ceramic pad 8 is connected, with inputs 70 and an output 52 connected to an input 36 of microprocessor 33.
- Figure 4 further shows a LED display 100 connected to microprocessor 33.
- the management of information contained in the pressure switch and the manual setting are rather simple operations being based on the use of buttons 12-14 and on visualisation by means of display 100.
- the pressure switch is fitted in the monitored system or machine with intervention pressure (e.g. 7 bars) taken to the required running value.
- intervention pressure e.g. 7 bars
- Such pressure is detected by ceramic sensor 8, which determines an umbalance of Wheatstone bridge 72 which is translated into an electrical signal of amplitude corresponding to the detected pressure, existing on output 52 of Wheatstone bridge 72 and on input 36 of microprocessor 33 of circuit 17 in fig. 3 .
- Said detected pressure may be shown on display 100.
- buttons 12-13 are used to scroll the menus up and down
- button 14 is used to access the submenus and more in general to provide input signals.
- the navigation system is similar to that of a cellular telephone.
- the menus are essentially “tree”-structured: the buttons are used to reach the required "branch”.
- Each acquisition of a new intervention value also automatically sets the reset threshold (hysteresis) according to a minimum hysteresis value.
- the pressure switch presents digital outputs 37-38 and analogue current outputs 39-40 (which may also be voltage outputs).
- a first output is associated to zero pressure (no pressure) value and a second output is associated to maximum pressure (full-scale of the pressure gauge) value.
- display 100 will light up with red light (red LED 11) if the output is "1" (zero pressure) and green light if the output is "0" (full-scale). Obviously, the signals may be reversed.
- a low current output 40 can be set (e.g. 4 mA) in the event of no pressure and a high output 39 (e.g. 20mA) can be set for the full-scale.
- An essential innovation made possible by the presence of display 100 and buttons 12-14, as well as by the management software used, consists in the possibility of setting at all times the pressure value other than zero which determines the presence of the high voltage value on analogue output. This means that a high signal (20 mA) can be obtained also for low pressure values, said high signal being very important for the operation of various measurement instruments or for controlling valves or other instruments.
- the current pressure switches allow to associate the high value (20 mA) to the full-scale, the intermediate pressures being indicated by signals proportionally lower and not suitable for the purpose for which they are used.
- the pressure switch here described may be provided with means for allowing remote information display and programming. In complex systems in which several pressure switches are fitted, the pressure switch can be identified from a remote control position and its operation.
- Setting buttons 12-14 may be used to introduce programming lock/unlock codes.
- the operator can perform setting operations only if the programmed combination of buttons 12-13 is known (e.g. button 12 is pressed twice, button 13 is pressed once and then button 14 is pressed three times).
- Such code is managed by a software integrated in circuit boards 2-3.
- the pressure switch according to the present invention thus allows to work in total safety (it has a high resistance to pressure surges and overpressure) and to rapidly set various parameters easily visible by means of display 100.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
- Push-Button Switches (AREA)
- Electrophonic Musical Instruments (AREA)
- Electronic Switches (AREA)
Abstract
Description
- The present invention concerns a programmable electronic pressure switch with display.
- There are known pressure switches comprising an external body with an internal cavity in which a circuit board is accommodated which is connected to a pressure sensor and to a power supply via a connector.
- Said pressure switches also comprise buttons for setting some parameters which are preferably arranged within the cavity for better projection.
- Italian patent application
MI2004A002329 - There are also pressure switches which comprise for a display with setting buttons which allow navigating in configuration menus managed by a software integrated in the circuit board comprised in the pressure switch.
- Furthermore, said pressure switches may have analogue outputs thus defined: a low output (e.g. 4 mA) equivalent to no pressure, and a high output (e.g. 20 mA) equivalent to the maximum pressure with standable by the system (full-scale of the pressure gauge). An intermediate output proportional to the detected pressure is available for intermediate values.
- Said analogue output signals may be used for measurement instruments, valve control and so on.
-
US 2004/187585 discloses an electronic digital pressure switch for detecting gas pressures features improved safety. The digital pressure switch that detects gas pressures and generates outputs has a housing provided with pinholes that allow a gas to pass therethrough. With this arrangement, even if a gas should leak into the housing, the leakage gas is let out through the pinholes. Thus, when the pressure of a flammable gas is detected, it is possible to eliminate the danger of an explosion caused by the flammable gas accumulating in the housing. -
US 5982047 discloses a pressure switching device of the type used in motor vehicles and includes a pressure sensor 21 arranged in a housing 3, which generates an electrical signal U according to the pressure p of a pressure medium or monitored fluid transmitted through a supply opening 15 of housing 3. The pressure switching devices includes an interpretation and switching unit 55 adapted to received the electrical sensor signal U and is further adapted to compare the sensor signal with at least one switching threshold value to trigger a switching function or a sequence of switching functions upon the electrical sensor signal exceeding and/or falling short of the switching threshold value. -
US 6429548 discloses a pressure switch with a pressure connection (11), with an electrical pressure sensor (19) to generate a pressure-dependent electrical signal, with an operator-device and/or an adjusting device (16-18) to input at least one pressure switch threshold and with at least one electrical switch output (16-18). The pressure switch can be adjusted by operation of the operator device (16-18) in such a manner that the electrical signal corresponding to the instantaneously applied pressure (p) is saved as the first saved pressure value (S1) and the electrical signal corresponding to a pressure (p) applied temporally thereafter, is saved as a second saved pressure value (S2), where these two saved pressure values (S1, S2) define the pressure switching threshold(s) in the operating mode. - It is the object of the present invention to make a pressure detecting pressure switch which can be programmed so as to vary the output levels corresponding to the detected pressures, in particular allowing to vary the pressure which determines the high level analogue output.
- According to invention, this object is reached by an electronic pressure switch as defined in
claim 1. - The possibility of setting the high level analogue output as desired according to the pressure allows to control valves, to provide signals to measurement instruments and more. In essence, the pressure switch according to the present invention may interface with any machine without the interposition of signal transformation devices.
- These and other features of the present invention will be further explained in the following detailed description of an embodiment thereof shown by way of non-limitative example in the attached drawings, in which:
-
figure 1 shows a frontal view of a pressure switch according to the present invention; -
figure 2 shows a sectional view taken along line II-II infigure 1 ; -
figure 3 shows a sectional view taken along line III-III infigure 2 ; -
figure 4 shows a circuit comprised in said at least one circuit board. - The electronic pressure switch shown in
figures 1 and 2 comprises anexternal aluminium body 1 with acavity 60 having two pairs oflongitudinal grooves 61 removably engageable with the ends of flat extractable circuit boards 2-3, electrically connected to each other. - Said
cavity 60 is upperly closed by a lid (62) which supports a connector 6 withexternal threading 63, crossed byelectrical wires 65 for the external electrical connection of circuit boards 2-3. -
External board 1 supports aLED display 100 and setting buttons 12-14, said display and said buttons being protected by amembrane 101. - On the lower part of body 1 a
steel flange 90 is fixed which is provided with acavity 91 in which a ceramicpad pressure sensor 8 withrespective seal 9 is fixed by means of aring nut 80 and aspacer 81, underneath which cavity a threadedattachment 92 for connecting to the pressurised circuit to be monitored, with aninternal input channel 95 for the monitored fluid, is found. - Said
flange 90 is releasable frombody 1, and in general is made of more resistant material with respect tobody 1 in order to work at very high working pressures. It may also be replaced by another flange of different material variable according to the required working pressure. - From a circuit point of view, said boards 2-3 comprise as a whole a circuit of the type shown in
figure 4 having switches 120-122 respectively controlled by setting buttons 12-14, amicroprocessor 33 with internal E2PROM,switching transistors 25,power transistors 35,various resistors 22,capacitors 49, anamplifier 50, ground connections, analogue outputs 39-40 controlled by afurther regulation board 99, and digital outputs 37-38 withindicator LEDs - The circuit further comprises a Wheatstone
bridge 72 to which theceramic pad 8 is connected, withinputs 70 and anoutput 52 connected to aninput 36 ofmicroprocessor 33. -
Figure 4 further shows aLED display 100 connected tomicroprocessor 33. - The management of information contained in the pressure switch and the manual setting are rather simple operations being based on the use of buttons 12-14 and on visualisation by means of
display 100. - It is assumed that the pressure switch is fitted in the monitored system or machine with intervention pressure (e.g. 7 bars) taken to the required running value. Such pressure is detected by
ceramic sensor 8, which determines an umbalance of Wheatstonebridge 72 which is translated into an electrical signal of amplitude corresponding to the detected pressure, existing onoutput 52 of Wheatstonebridge 72 and oninput 36 ofmicroprocessor 33 of circuit 17 infig. 3 . - Said detected pressure may be shown on
display 100. - By navigating by means of setting buttons 12-14 in configuration menu managed by a software integrated in boards 2-3 and visible by means of
display 100, it is possible to program: - the intervention values;
- the engineering unit;
- the delay time of outputs 37-40;
- the intervention point;
- the reset point with or without pressure.
- In particular, buttons 12-13 are used to scroll the menus up and down,
button 14 is used to access the submenus and more in general to provide input signals. The navigation system is similar to that of a cellular telephone. The menus are essentially "tree"-structured: the buttons are used to reach the required "branch". - It is not necessary to stop the monitored pressurised system or machine to perform these settings. The presence of power in the pressure switch is indicated on
display 100. - Each acquisition of a new intervention value also automatically sets the reset threshold (hysteresis) according to a minimum hysteresis value.
- As previously mentioned, the pressure switch presents digital outputs 37-38 and analogue current outputs 39-40 (which may also be voltage outputs).
- Of the various settings, the basic, and possibly the most useful, setting allows to set output signals according to the detected pressure. Usually, a first output is associated to zero pressure (no pressure) value and a second output is associated to maximum pressure (full-scale of the pressure gauge) value.
- For example, by setting a digital output 37-38,
display 100 will light up with red light (red LED 11) if the output is "1" (zero pressure) and green light if the output is "0" (full-scale). Obviously, the signals may be reversed. - If an analogue output is set, a low
current output 40 can be set (e.g. 4 mA) in the event of no pressure and a high output 39 (e.g. 20mA) can be set for the full-scale. - An essential innovation made possible by the presence of
display 100 and buttons 12-14, as well as by the management software used, consists in the possibility of setting at all times the pressure value other than zero which determines the presence of the high voltage value on analogue output. This means that a high signal (20 mA) can be obtained also for low pressure values, said high signal being very important for the operation of various measurement instruments or for controlling valves or other instruments. - As already pointed out in the preamble to the present patent, the current pressure switches allow to associate the high value (20 mA) to the full-scale, the intermediate pressures being indicated by signals proportionally lower and not suitable for the purpose for which they are used.
-
Board 99 of the circuit infigure 4 indeed allows to sethigh output 39 to different pressure values. - The pressure switch here described may be provided with means for allowing remote information display and programming. In complex systems in which several pressure switches are fitted, the pressure switch can be identified from a remote control position and its operation.
- Setting buttons 12-14 may be used to introduce programming lock/unlock codes. The operator can perform setting operations only if the programmed combination of buttons 12-13 is known (
e.g. button 12 is pressed twice,button 13 is pressed once and thenbutton 14 is pressed three times). Such code is managed by a software integrated in circuit boards 2-3. - The pressure switch according to the present invention thus allows to work in total safety (it has a high resistance to pressure surges and overpressure) and to rapidly set various parameters easily visible by means of
display 100.
Claims (11)
- An electronic pressure switch comprising an external body (1) provided with a cavity (60) wherein there are accommodated a pressure sensor (8) arranged under the pressure of the monitored environment and adapted to detect pressure values comprises between a minimum pressure value and a maximum pressure value, at least one circuit board (2-3) provided with memory connected to said pressure sensor (8) and a display (100) for viewing information for the operator and programming the pressure switch itself by means of setting means comprising at least one button (12-14), said at least one circuit board (2-3) comprising circuit components (22, 25, 35, 49, 50) controlled by an integrated software, characterised in that said integrated software is adapted to set at least a first and a second analogue output values (39-40) with the second analogue output value (39) higher than the first analogue output value (40) and wherein the first analogue output value is set according to zero pressure value, the second analogue output value is set according to any pressure value measurable by the pressure sensor (8), comprised between zero and the maximum pressure values except the same zero pressure value, and in that said cavity (60) being upperly closed by a lid (62) which supports a connector (6).
- A pressure switch according to claim 1, characterised in that it further comprises a digital output (37-38) adapted to provide a digital signal when a programmed pressure value is reached.
- A pressure switch according to claim 1 or 2, characterised in that said circuit components comprise a regulation board (99), settable by means of said setting means (12-14), adapted to receive a signal from a microprocessor (33) and emit a digital output signal (37-38) and an analogue output signal (39-40) according to the received signal.
- A pressure switch according to claim 3, characterised in that said microprocessor (33) is controlled by said setting means and is provided with a memory for storing a signal from a Wheatstone bridge (72) according to the pressure detected by sensor (8), said microprocessor adapted to determine the presence or not of an output signal (37-40) as a function of said signal stored in the memory, the output signal being the digital and/or the analogue output signal.
- A pressure switch according to claim 1, characterised in that said at least one circuit board (2-3) comprises a software for displaying menus for reading information and configuring the pressure switch on the display (100), said menus being navigable with said at least one button (12-14).
- A pressure switch according to claim 5, characterised in that it comprises a first (12) and a second (13) buttons for scrolling said menu and a third setting button (14).
- A pressure switch according to any of the preceding claims, characterised in that it is adapted to allow the operator to set the pressure value for which a high analogue output signal is provided (39).
- A pressure switch according to claim 1, characterised in that said display (100) is a LED display.
- A pressure switch according to claim 1, characterised in that it comprises an external membrane (101) for protecting the display (100) and at least one button (12-14).
- A pressure switch according to claim 1, characterised in that it comprises two circuit boards (2-3).
- A pressure switch according to claim 1, characterised in that it comprises a removable lower flange (90) for attaching to the pressurised environment to be monitored.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT002122A ITMI20052122A1 (en) | 2005-11-08 | 2005-11-08 | ELECTRONIC PRESSURE SWITCH PROGRAMMABLE WITH DISPLAY |
PCT/EP2006/068040 WO2007054460A1 (en) | 2005-11-08 | 2006-11-02 | Programmable electronic pressure switch with display |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1946064A1 EP1946064A1 (en) | 2008-07-23 |
EP1946064B1 true EP1946064B1 (en) | 2011-05-18 |
Family
ID=37562117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06807718A Active EP1946064B1 (en) | 2005-11-08 | 2006-11-02 | Programmable electronic pressure switch with display |
Country Status (14)
Country | Link |
---|---|
US (1) | US20100228503A1 (en) |
EP (1) | EP1946064B1 (en) |
KR (1) | KR20080074162A (en) |
CN (1) | CN101300468B (en) |
AT (1) | ATE510200T1 (en) |
AU (1) | AU2006311108A1 (en) |
BR (1) | BRPI0619669A2 (en) |
CA (1) | CA2627213A1 (en) |
DK (1) | DK1946064T3 (en) |
EA (1) | EA013388B1 (en) |
HK (1) | HK1125450A1 (en) |
IT (1) | ITMI20052122A1 (en) |
NO (1) | NO20082666L (en) |
WO (1) | WO2007054460A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011078834A1 (en) * | 2009-12-22 | 2011-06-30 | Walter Kidde Portable Equipment, Inc. | Electronic pressure gauge |
CN102236334A (en) * | 2011-05-08 | 2011-11-09 | 肇庆市志成气动有限公司 | Digital pressure switch |
CN104848983A (en) * | 2014-11-24 | 2015-08-19 | 重庆斯凯力科技有限公司 | Electronic pressure transducer |
KR102020535B1 (en) * | 2018-03-07 | 2019-09-17 | 주식회사 히스코센서 | Method for operating pressure transmitter setup |
CN113314380B (en) * | 2021-04-09 | 2023-06-27 | 江元(天长)科技股份有限公司 | Mechanical pressure switch structure and switch system convenient to debug |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4582089A (en) * | 1984-10-31 | 1986-04-15 | General Screw Products Company | Valve manifold having a removable flange |
US5361218A (en) * | 1992-08-11 | 1994-11-01 | Itt Corporation | Self-calibrating sensor |
DE19637607A1 (en) * | 1996-09-16 | 1998-03-19 | Trw Fahrzeugelektrik | Pressure switch device, in particular for automotive technology |
CN1068432C (en) * | 1997-09-30 | 2001-07-11 | 浙江大学 | Hand-holding type fluid pressure wave form measuring instrument |
DE19906639A1 (en) * | 1999-02-18 | 2000-09-14 | Festo Ag & Co | Pressure switch |
DE60024574T2 (en) * | 1999-12-20 | 2006-08-24 | Trw Automotive U.S. Llc, Livonia | Device and method for checking the operating state of a vehicle tire |
US6912399B2 (en) * | 2001-01-22 | 2005-06-28 | Royal Thoughts, Llc | Cellular telephone with programmable authorized telephone number |
CN100403472C (en) * | 2003-02-18 | 2008-07-16 | 三洋电机株式会社 | Electronic digital pressure switch |
US6968733B2 (en) * | 2004-01-12 | 2005-11-29 | Innova Electronics Corporation | Digital compression gauge |
-
2005
- 2005-11-08 IT IT002122A patent/ITMI20052122A1/en unknown
-
2006
- 2006-11-02 US US12/092,782 patent/US20100228503A1/en not_active Abandoned
- 2006-11-02 EA EA200801286A patent/EA013388B1/en not_active IP Right Cessation
- 2006-11-02 WO PCT/EP2006/068040 patent/WO2007054460A1/en active Application Filing
- 2006-11-02 CN CN2006800413686A patent/CN101300468B/en not_active Expired - Fee Related
- 2006-11-02 BR BRPI0619669-1A patent/BRPI0619669A2/en not_active IP Right Cessation
- 2006-11-02 KR KR1020087013617A patent/KR20080074162A/en not_active Application Discontinuation
- 2006-11-02 AU AU2006311108A patent/AU2006311108A1/en not_active Abandoned
- 2006-11-02 AT AT06807718T patent/ATE510200T1/en not_active IP Right Cessation
- 2006-11-02 CA CA002627213A patent/CA2627213A1/en not_active Abandoned
- 2006-11-02 EP EP06807718A patent/EP1946064B1/en active Active
- 2006-11-02 DK DK06807718.9T patent/DK1946064T3/en active
-
2008
- 2008-06-06 NO NO20082666A patent/NO20082666L/en not_active Application Discontinuation
-
2009
- 2009-04-23 HK HK09103779.2A patent/HK1125450A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BRPI0619669A2 (en) | 2011-10-11 |
EP1946064A1 (en) | 2008-07-23 |
US20100228503A1 (en) | 2010-09-09 |
DK1946064T3 (en) | 2011-09-05 |
ATE510200T1 (en) | 2011-06-15 |
ITMI20052122A1 (en) | 2007-05-09 |
HK1125450A1 (en) | 2009-08-07 |
WO2007054460A1 (en) | 2007-05-18 |
NO20082666L (en) | 2008-06-06 |
CN101300468A (en) | 2008-11-05 |
CA2627213A1 (en) | 2007-05-18 |
AU2006311108A1 (en) | 2007-05-18 |
EA200801286A1 (en) | 2009-02-27 |
CN101300468B (en) | 2011-04-13 |
KR20080074162A (en) | 2008-08-12 |
EA013388B1 (en) | 2010-04-30 |
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